When hotels ask guests to reuse towels to conserve water and energy, about half say they comply, with another 39% saying they sometimes reuse towels.

Those results, from a survey of 2,700 travelers nationwide, suggest most travelers have accepted some conservation efforts by the hotel industry, said Patricia Griffin, president and founder of the Green Hotel Assn., a global environmental group.

“It is the one thing across the board that hotels are doing to conserve,” she said.

CaptionCelebrity homes: Ellen DeGeneres dances to the top of tourists' must-see list

Glenn Koenig / Los Angeles Times

Talk show host and comedian Ellen DeGeneres was the celebrity whose home visiting tourists in 2013 most requested to see.

Talk show host and comedian Ellen DeGeneres was the celebrity whose home visiting tourists in 2013 most requested to see. (Glenn Koenig / Los Angeles Times)